ssl-cert-check-master/0000775000175000017500000000000013620364503014454 5ustar takakitakakissl-cert-check-master/LICENSE0000664000175000017500000003550613620364503015472 0ustar takakitakakiThe GNU General Public License, Version 2, June 1991 (GPLv2) ============================================================ > Copyright (C) 1989, 1991 Free Software Foundation, Inc. > 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble -------- The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. This General Public License applies to most of the Free Software Foundation's software and to any other program whose authors commit to using it. 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No Warranty ----------- **11.** BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. **12.** IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. ssl-cert-check-master/README.md0000664000175000017500000000641213620364503015736 0ustar takakitakaki# SSL Certification Expiration Checker: ssl-cert-check is a Bourne shell script that can be used to report on expiring SSL certificates. The script was designed to be run from cron and can e-mail warnings or log alerts through nagios. # Usage:
$ ./ssl-cert-check
Usage: ./ssl-cert-check [ -e email address ] [ -E sender email address ] [ -x days ] [-q] [-a] [-b] [-h] [-i] [-n] [-N] [-v]
       { [ -s common_name ] && [ -p port] } || { [ -f cert_file ] } || { [ -c cert file ] } || { [ -d cert dir ] }"

  -a                : Send a warning message through E-mail
  -b                : Will not print header
  -c cert file      : Print the expiration date for the PEM or PKCS12 formatted certificate in cert file
  -d cert directory : Print the expiration date for the PEM or PKCS12 formatted certificates in cert directory
  -e E-mail address : E-mail address to send expiration notices
  -E E-mail address : Sender E-mail address
  -f cert file      : File with a list of FQDNs and ports
  -h                : Print this screen
  -i                : Print the issuer of the certificate
  -k password       : PKCS12 file password
  -n                : Run as a Nagios plugin
  -N                : Run as a Nagios plugin and output one line summary (implies -n, requires -f or -d)
  -p port           : Port to connect to (interactive mode)
  -s commmon name   : Server to connect to (interactive mode)
  -t type           : Specify the certificate type
  -q                : Don't print anything on the console
  -v                : Specify a specific protocol version to use (tls, ssl2, ssl3)
  -V                : Only print validation data
  -x days           : Certificate expiration interval (eg. if cert_date < days)
# Examples: Print the expiration times for one or more certificates listed in ssldomains:
$ ssl-cert-check -f ssldomains
Host                                            Status       Expires      Days Left
----------------------------------------------- ------------ ------------ ----------
www.prefetch.com:443                            Valid        May 23 2006  218
mail.prefetch.net:993                           Valid        Jun 20 2006  246
gmail.google.com:443                            Valid        Jun 7 2006   233
www.sun.com:443                                 Valid        May 11 2009  1302
www.spotch.com:443                              Connection refused Unknown Unknown
Check all certificates with file pattern "/etc/haproxy/ssl/\*.pem"
$ ssl-cert-check -d "/etc/haproxy/ssl/*.pem"
Host                                            Status       Expires      Days
----------------------------------------------- ------------ ------------ ----
FILE:/etc/haproxy/ssl/example1.org.pem      Valid        Jan 6 2017   78                                 
FILE:/etc/haproxy/ssl/example2.org.pem      Valid        Jan 1 2017   73                                 
FILE:/etc/haproxy/ssl/example3.org.pem      Valid        Jan 6 2017   78                                 
Send an e-mail to admin@prefetch.net if a domain listed in ssldomains will expire in the next 60-days:
$ ssl-cert-check -a -f ssldomains -q -x 60 -e admin@prefetch.net
# Additional Documentation Documentation And Examples: http://prefetch.net/articles/checkcertificate.html ssl-cert-check-master/ssl-cert-check0000755000175000017500000010247713620364503017222 0ustar takakitakaki#!/usr/bin/env bash PROGRAMVERSION=4.14 # # Program: SSL Certificate Check # # Source code home: https://github.com/Matty9191/ssl-cert-check # # Documentation: http://prefetch.net/articles/checkcertificate.html # # Author: Matty < matty91 at gmail dot com > # # Last Updated: 02-10-2020 # # Revision History: # # Version 4.14 # - Fixed HOST / PORT discovery @mhow2 # # Version 4.13 # - Reverted the file checking logic which breaks $RETCODE # # Version 4.12 # - Fixed various logic errors and typos -- Daniel Lewart # # Version 4.10 # - Replace tabs with spaces # - More shllcheck cleanup work # - Remove unused DEBUG variable # - Fixed an innocuous whitespace bug in TLSFLAG variable creation # - Set the default TLS version to 1.1 (can be overridden with -v) # - Switched openssl CLI options to use an array. The reasons why # are documented here: http://mywiki.wooledge.org/BashFAQ/050 # # Version 4.9 # - Add a signal handler to call the cleanup funtion # if the script doesn't exit() cleanly -- Timothe Litt # # Version 4.8 # - More mail client fixes # # Version 4.7 # - Revert SENDER to "" # - More shellcheck cleanup # # Version 4.6 # - Fixed programming logic error # # Version 4.5 # - Re-work mailx support for FreeBSD # - More shellcheck fixes # # Version 4.4 # - Use command -v instead of which utility to satisfy shellcheck. # - Fix unquoted MAIL and MAILMODE variables in help output # - More shellcheck fixes # # Version 4.3 # - Fixed a typo in the program version # # Version 4.2 # - Change CERTDAYS to CERTDIFF in the e-mail subject. # # Version 4.1 # - Fix usage output # # Version 4.0 # - Updated the script syntax to align with UNIX shell programming # - Check for DNS resolution failures # - First round of updates to make shellcheck happy # - Rework the logic to call mailx. # - Print the version with the "-V" option. # - Define the version in the PROGRAMVERSION variable # # Version 3.31 # - Fixed the test for the -servername flag -- Kitson Consulting. # # Version 3.30 # - Use highest returncode for Nagios output -- Marcel Pennewiss # - Set RETCODE to 3 (unknown) if a certificate file does not exist -- Marcel Pennewiss # - Add a "-d" option to specify a directory or file mask pattern -- Marcel Pennewiss # - Add a "-N" option to create summarized Nagios output -- Marcel Pennewiss # - Cleaned up many formatting -- Marcel Pennewiss # # Versione 3.29a # - Added option to specify email sender address # # Version 3.29 # - Add the openssl -servername flag if it shows up in help. # # Version 3.28 # - Added a DEBUG option to assist with debugging folks who use the script # # Version 3.27 # - Allow white spaces to exist in the certificate file list # - Add an additional check to pick up bad / non-existent certificates # - Add a check to look for the existence of a mail program. Error out if it's not present. # - Enable the TLS -servername extension by default - Juergen Knaack & Johan Denoyer # # Version 3.26 # - Allow the certificate type (PEM, DER, NET) to be passed on the command line # # Version 3.25 # - Check for "no route to host" errors -- Dan Doyle # - Set RETCODE to 3 (unknown) if a connection error occurs -- Dan Doyle # - Documentation fixes # # Version 3.24 # - Utilize the -clcerts option to limit the results to client certificates - Eitan Katznelson # # Version 3.23 # - Fixed typo in date2julian routine -- Ken Cook # # Version 3.22 # - Change the validation option to "-V" # - Add a "-v" option to specify a specific protocol version (ssl2, ssl3 or tls) # # Version 3.21 # - Adjust e-mail checking to avoid exiting if notifications aren't enabled -- Nick Anderson # - Added the number of days until expiration to the Nagios output -- Nick Anderson # # Version 3.20 # - Fixed a bug in certificate length checking -- Tim Nowaczyk # # Version 3.19 # - Added check to verify the certificate retrieved is valid # # Version 3.18 # - Add support for connecting to FTP servers -- Paul A Sand # # Version 3.17 # - Add support for connecting to imap servers -- Joerg Pareigis # # Version 3.16 # - Add support for connecting to the mail sbmission port -- Luis E. Munoz # # Version 3.15 # - Adjusted the file checking logic to use the correct certificate -- Maciej Szudejko # - Add sbin to the default search paths for OpenBSD compatibility -- Alex Popov # - Use cut instead of substring processing to ensure compatibility -- Alex Popov # # Version 3.14 # - Fixed the Common Name parser to handle DN's where the CN is not the last item # eg. EmailAddr -- Jason Brothers # - Added the ability to grab the serial number -- Jason Brothers # - Added the "-b" option to print results without a header -- Jason Brothers # - Added the "-v" option for certificate validation -- Jason Brothers # # Version 3.13 # - Updated the subject line to include the hostname as well as # the common name embedded in the X509 certificate (if it's # available) -- idea proposed by Mike Burns # # Version 3.12 # - Updated the license to allow redistribution and modification # # Version 3.11 # - Added ability to comment out lines in files passed # to the "-f" option -- Brett Stauner # - Fixed comment next to file processing logic # # Version 3.10 # - Fixed POP3 port -- Simon Matter # # Version 3.9 # - Switched binary location logic to use which utility # # Version 3.8 # - Fixed display on 80 column displays # - Cleaned up the formatting # # Version 3.7 # - Fixed bug in NAGIOS tests -- Ben Allen # # Version 3.6 # - Added support for certificates stored in PKCS#12 databases -- Ken Gallo # - Cleaned up comments # - Adjusted variables to be more consistent # # Version 3.5 # - Added support for NAGIOS -- Quanah Gibson-Mount # - Added additional checks for mail -- Quanah Gibson-Mount # - Convert tabs to spaces -- Quanah Gibson-Mount # - Cleaned up usage() routine # - Added additional checks for openssl # # Version 3.4 # - Added a missing "{" to line 364 -- Ken Gallo # - Move mktemp to the start of the main body to avoid errors # - Adjusted default binary paths to make sure the script just works # w/ Solaris, BSD and Linux hosts # # Version 3.3 # - Added common name from X.509 certificate file to E-mail body / header -- Doug Curtis # - Fixed several documentation errors # - Use mktemp to create temporary files # - Convert printf, sed and awk to variables # - Check for printf, sed, awk and mktemp binaries # - Add additional logic to make sure mktemp returned a valid temporary file # # Version 3.2 # - Added option to list certificates in the file passed to "-f". # # Version 3.1 # - Added handling for starttls for smtp -- Marco Amrein # - Added handling for starttls for pop3 (without s) -- Marco Amrein # - Removed extra spacing at end of script # # Version 3.0 # - Added "-i" option to print certificate issuer # - Removed $0 from Subject line of outbound e-mails # - Fixed some typographical errors # - Removed redundant "-b" option # # Version 2.0 # - Fixed an issue with e-mails formatting incorrectly # - Added additional space to host column -- Darren-Perot Spruell # - Replaced GNU date dependency with CHRIS F. A. JOHNSON's # date2julian shell function. This routine can be found on # page 170 of Chris's book "Shell Scripting Recipes: A # Problem-Solution Approach," ISBN #1590594711. Julian function # was created based on a post to comp.unix.shell by Tapani Tarvainen. # - Cleaned up function descriptions # - Removed several lines of redundant code # - Adjusted the help message # # Version 1.1 # - Added "-c" flag to report expiration status of a PEM encoded # certificate -- Hampus Lundqvist # - Updated the prints messages to display the reason a connection # failed (connection refused, connection timeout, bad cert, etc) # - Updated the GNU date checking routines # - Added checks for each binary required # - Added checks for connection timeouts # - Added checks for GNU date # - Added a "-h" option # - Cleaned up the documentation # # Version 1.0 # Initial Release # # Purpose: # ssl-cert-check checks to see if a digital certificate in X.509 format # has expired. ssl-cert-check can be run in interactive and batch mode, # and provides facilities to alarm if a certificate is about to expire. # # License: # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # Requirements: # Requires openssl # # Installation: # Copy the shell script to a suitable location # # Tested platforms: # -- Solaris 9 using /bin/bash # -- Solaris 10 using /bin/bash # -- OS X 10.4.2 using /bin/bash # -- OpenBSD using /bin/sh # -- FreeBSD using /bin/sh # -- Centos Linux 3, 4, 5 & 6 using /bin/bash # -- Redhat Enterprise Linux 3, 4, 5 & 6 using /bin/bash # -- Gentoo using /bin/bash # # Usage: # Refer to the usage() sub-routine, or invoke ssl-cert-check # with the "-h" option. # # Examples: # Please refer to the following site for documentation and examples: # http://prefetch.net/articles/checkcertificate.html # Cleanup temp files if they exist trap cleanup EXIT INT TERM QUIT PATH=/bin:/usr/bin:/sbin:/usr/sbin:/usr/local/bin:/usr/local/ssl/bin:/usr/sfw/bin export PATH # Who to page when an expired certificate is detected (cmdline: -e) ADMIN="root" # Email sender address for alarm notifications SENDER="" # Number of days in the warning threshhold (cmdline: -x) WARNDAYS=30 # If QUIET is set to TRUE, don't print anything on the console (cmdline: -q) QUIET="FALSE" # Don't send E-mail by default (cmdline: -a) ALARM="FALSE" # Don't run as a Nagios plugin by default (cmdline: -n) NAGIOS="FALSE" # Don't summarize Nagios output by default (cmdline: -N) NAGIOSSUMMARY="FALSE" # NULL out the PKCSDBPASSWD variable for later use (cmdline: -k) PKCSDBPASSWD="" # Type of certificate (PEM, DER, NET) (cmdline: -t) CERTTYPE="pem" # Location of system binaries AWK=$(command -v awk) DATE=$(command -v date) GREP=$(command -v grep) OPENSSL=$(command -v openssl) PRINTF=$(command -v printf) SED=$(command -v sed) MKTEMP=$(command -v mktemp) FIND=$(command -v find) # Try to find a mail client if [ -f /usr/bin/mailx ]; then MAIL="/usr/bin/mailx" MAILMODE="mailx" elif [ -f /bin/mail ]; then MAIL="/bin/mail" MAILMODE="mail" elif [ -f /usr/bin/mail ]; then MAIL="/usr/bin/mail" MAILMODE="mail" elif [ -f /sbin/mail ]; then MAIL="/sbin/mail" MAILMODE="mail" elif [ -f /usr/sbin/mail ]; then MAIL="/usr/sbin/mail" MAILMODE="mail" elif [ -f /usr/sbin/sendmail ]; then MAIL="/usr/sbin/sendmail" MAILMODE="sendmail" else MAIL="cantfindit" MAILMODE="cantfindit" fi # Return code used by nagios. Initialize to 0. RETCODE=0 # Certificate counters and minimum difference. Initialize to 0. SUMMARY_VALID=0 SUMMARY_WILL_EXPIRE=0 SUMMARY_EXPIRED=0 SUMMARY_MIN_DIFF=0 SUMMARY_MIN_DATE= SUMMARY_MIN_HOST= SUMMARY_MIN_PORT= # Set the default umask to be somewhat restrictive umask 077 ##################################################### # Purpose: Remove temporary files if the script doesn't # exit() cleanly ##################################################### cleanup() { if [ -f "${CERT_TMP}" ]; then rm -f "${CERT_TMP}" fi if [ -f "${ERROR_TMP}" ]; then rm -f "${ERROR_TMP}" fi } ##################################################### ### Send email ### Accepts three parameters: ### $1 -> sender email address ### $2 -> email to send mail ### $3 -> Subject ### $4 -> Message ##################################################### send_mail() { FROM="${1}" TO="${2}" SUBJECT="${3}" MSG="${4}" case "${MAILMODE}" in "mail") echo "$MSG" | "${MAIL}" -r "$FROM" -s "$SUBJECT" "$TO" ;; "mailx") echo "$MSG" | "${MAIL}" -s "$SUBJECT" "$TO" ;; "sendmail") (echo "Subject:$SUBJECT" && echo "TO:$TO" && echo "FROM:$FROM" && echo "$MSG") | "${MAIL}" "$TO" ;; "*") echo "ERROR: You enabled automated alerts, but the mail binary could not be found." echo "FIX: Please modify the \${MAIL} and \${MAILMODE} variable in the program header." exit 1 ;; esac } ############################################################################# # Purpose: Convert a date from MONTH-DAY-YEAR to Julian format # Acknowledgements: Code was adapted from examples in the book # "Shell Scripting Recipes: A Problem-Solution Approach" # ( ISBN 1590594711 ) # Arguments: # $1 -> Month (e.g., 06) # $2 -> Day (e.g., 08) # $3 -> Year (e.g., 2006) ############################################################################# date2julian() { if [ "${1}" != "" ] && [ "${2}" != "" ] && [ "${3}" != "" ]; then ## Since leap years add aday at the end of February, ## calculations are done from 1 March 0000 (a fictional year) d2j_tmpmonth=$((12 * $3 + $1 - 3)) ## If it is not yet March, the year is changed to the previous year d2j_tmpyear=$(( d2j_tmpmonth / 12)) ## The number of days from 1 March 0000 is calculated ## and the number of days from 1 Jan. 4713BC is added echo $(( (734 * d2j_tmpmonth + 15) / 24 - 2 * d2j_tmpyear + d2j_tmpyear/4 - d2j_tmpyear/100 + d2j_tmpyear/400 + $2 + 1721119 )) else echo 0 fi } ############################################################################# # Purpose: Convert a string month into an integer representation # Arguments: # $1 -> Month name (e.g., Sep) ############################################################################# getmonth() { case ${1} in Jan) echo 1 ;; Feb) echo 2 ;; Mar) echo 3 ;; Apr) echo 4 ;; May) echo 5 ;; Jun) echo 6 ;; Jul) echo 7 ;; Aug) echo 8 ;; Sep) echo 9 ;; Oct) echo 10 ;; Nov) echo 11 ;; Dec) echo 12 ;; *) echo 0 ;; esac } ############################################################################# # Purpose: Calculate the number of seconds between two dates # Arguments: # $1 -> Date #1 # $2 -> Date #2 ############################################################################# date_diff() { if [ "${1}" != "" ] && [ "${2}" != "" ]; then echo $((${2} - ${1})) else echo 0 fi } ##################################################################### # Purpose: Print a line with the expiraton interval # Arguments: # $1 -> Hostname # $2 -> TCP Port # $3 -> Status of certification (e.g., expired or valid) # $4 -> Date when certificate will expire # $5 -> Days left until the certificate will expire # $6 -> Issuer of the certificate # $7 -> Common Name # $8 -> Serial Number ##################################################################### prints() { if [ "${NAGIOSSUMMARY}" = "TRUE" ]; then return fi if [ "${QUIET}" != "TRUE" ] && [ "${ISSUER}" = "TRUE" ] && [ "${VALIDATION}" != "TRUE" ]; then MIN_DATE=$(echo "$4" | "${AWK}" '{ printf "%3s %2d %4d", $1, $2, $4 }') if [ "${NAGIOS}" = "TRUE" ]; then ${PRINTF} "%-35s %-17s %-8s %-11s %s\n" "$1:$2" "$6" "$3" "$MIN_DATE" "|days=$5" else ${PRINTF} "%-35s %-17s %-8s %-11s %4d\n" "$1:$2" "$6" "$3" "$MIN_DATE" "$5" fi elif [ "${QUIET}" != "TRUE" ] && [ "${ISSUER}" = "TRUE" ] && [ "${VALIDATION}" = "TRUE" ]; then ${PRINTF} "%-35s %-35s %-32s %-17s\n" "$1:$2" "$7" "$8" "$6" elif [ "${QUIET}" != "TRUE" ] && [ "${VALIDATION}" != "TRUE" ]; then MIN_DATE=$(echo "$4" | "${AWK}" '{ printf "%3s %2d, %4d", $1, $2, $4 }') if [ "${NAGIOS}" = "TRUE" ]; then ${PRINTF} "%-47s %-12s %-12s %s\n" "$1:$2" "$3" "$MIN_DATE" "|days=$5" else ${PRINTF} "%-47s %-12s %-12s %4d\n" "$1:$2" "$3" "$MIN_DATE" "$5" fi elif [ "${QUIET}" != "TRUE" ] && [ "${VALIDATION}" = "TRUE" ]; then ${PRINTF} "%-35s %-35s %-32s\n" "$1:$2" "$7" "$8" fi } #################################################### # Purpose: Print a heading with the relevant columns # Arguments: # None #################################################### print_heading() { if [ "${NOHEADER}" != "TRUE" ]; then if [ "${QUIET}" != "TRUE" ] && [ "${ISSUER}" = "TRUE" ] && [ "${NAGIOS}" != "TRUE" ] && [ "${VALIDATION}" != "TRUE" ]; then ${PRINTF} "\n%-35s %-17s %-8s %-11s %-4s\n" "Host" "Issuer" "Status" "Expires" "Days" echo "----------------------------------- ----------------- -------- ----------- ----" elif [ "${QUIET}" != "TRUE" ] && [ "${ISSUER}" = "TRUE" ] && [ "${NAGIOS}" != "TRUE" ] && [ "${VALIDATION}" = "TRUE" ]; then ${PRINTF} "\n%-35s %-35s %-32s %-17s\n" "Host" "Common Name" "Serial #" "Issuer" echo "----------------------------------- ----------------------------------- -------------------------------- -----------------" elif [ "${QUIET}" != "TRUE" ] && [ "${NAGIOS}" != "TRUE" ] && [ "${VALIDATION}" != "TRUE" ]; then ${PRINTF} "\n%-47s %-12s %-12s %-4s\n" "Host" "Status" "Expires" "Days" echo "----------------------------------------------- ------------ ------------ ----" elif [ "${QUIET}" != "TRUE" ] && [ "${NAGIOS}" != "TRUE" ] && [ "${VALIDATION}" = "TRUE" ]; then ${PRINTF} "\n%-35s %-35s %-32s\n" "Host" "Common Name" "Serial #" echo "----------------------------------- ----------------------------------- --------------------------------" fi fi } #################################################### # Purpose: Print a summary for nagios # Arguments: # None #################################################### print_summary() { if [ "${NAGIOSSUMMARY}" != "TRUE" ]; then return fi if [ ${SUMMARY_WILL_EXPIRE} -eq 0 ] && [ ${SUMMARY_EXPIRED} -eq 0 ]; then ${PRINTF} "%s valid certificate(s)|days=%s\n" "${SUMMARY_VALID}" "${SUMMARY_MIN_DIFF}" elif [ ${SUMMARY_EXPIRED} -ne 0 ]; then ${PRINTF} "%s certificate(s) expired (%s:%s on %s)|days=%s\n" "${SUMMARY_EXPIRED}" "${SUMMARY_MIN_HOST}" "${SUMMARY_MIN_PORT}" "${SUMMARY_MIN_DATE}" "${SUMMARY_MIN_DIFF}" elif [ ${SUMMARY_WILL_EXPIRE} -ne 0 ]; then ${PRINTF} "%s certificate(s) will expire (%s:%s on %s)|days=%s\n" "${SUMMARY_WILL_EXPIRE}" "${SUMMARY_MIN_HOST}" "${SUMMARY_MIN_PORT}" "${SUMMARY_MIN_DATE}" "${SUMMARY_MIN_DIFF}" fi } ############################################################# # Purpose: Set returncode to value if current value is lower # Arguments: # $1 -> New returncorde ############################################################# set_returncode() { if [ "${RETCODE}" -lt "${1}" ]; then RETCODE="${1}" fi } ######################################################################## # Purpose: Set certificate counters and informations for nagios summary # Arguments: # $1 -> Status of certificate (0: valid, 1: will expire, 2: expired) # $2 -> Hostname # $3 -> TCP Port # $4 -> Date when certificate will expire # $5 -> Days left until the certificate will expire ######################################################################## set_summary() { if [ "${1}" -eq 0 ]; then SUMMARY_VALID=$((SUMMARY_VALID+1)) elif [ "${1}" -eq 1 ]; then SUMMARY_WILL_EXPIRE=$((SUMMARY_WILL_EXPIRE+1)) else SUMMARY_EXPIRED=$((SUMMARY_EXPIRED+1)) fi if [ "${5}" -lt "${SUMMARY_MIN_DIFF}" ] || [ "${SUMMARY_MIN_DIFF}" -eq 0 ]; then SUMMARY_MIN_DATE="${4}" SUMMARY_MIN_DIFF="${5}" SUMMARY_MIN_HOST="${2}" SUMMARY_MIN_PORT="${3}" fi } ########################################## # Purpose: Describe how the script works # Arguments: # None ########################################## usage() { echo "Usage: $0 [ -e email address ] [-E sender email address] [ -x days ] [-q] [-a] [-b] [-h] [-i] [-n] [-N] [-v]" echo " { [ -s common_name ] && [ -p port] } || { [ -f cert_file ] } || { [ -c cert file ] } || { [ -d cert dir ] }" echo "" echo " -a : Send a warning message through E-mail" echo " -b : Will not print header" echo " -c cert file : Print the expiration date for the PEM or PKCS12 formatted certificate in cert file" echo " -d cert directory : Print the expiration date for the PEM or PKCS12 formatted certificates in cert directory" echo " -e E-mail address : E-mail address to send expiration notices" echo " -E E-mail sender : E-mail address of the sender" echo " -f cert file : File with a list of FQDNs and ports" echo " -h : Print this screen" echo " -i : Print the issuer of the certificate" echo " -k password : PKCS12 file password" echo " -n : Run as a Nagios plugin" echo " -N : Run as a Nagios plugin and output one line summary (implies -n, requires -f or -d)" echo " -p port : Port to connect to (interactive mode)" echo " -q : Don't print anything on the console" echo " -s commmon name : Server to connect to (interactive mode)" echo " -S : Print validation information" echo " -t type : Specify the certificate type" echo " -V : Print version information" echo " -x days : Certificate expiration interval (eg. if cert_date < days)" echo "" } ########################################################################## # Purpose: Connect to a server ($1) and port ($2) to see if a certificate # has expired # Arguments: # $1 -> Server name # $2 -> TCP port to connect to ########################################################################## check_server_status() { PORT="$2" case "$PORT" in smtp|25|submission|587) TLSFLAG="-starttls smtp";; pop3|110) TLSFLAG="-starttls pop3";; imap|143) TLSFLAG="-starttls imap";; ftp|21) TLSFLAG="-starttls ftp";; xmpp|5222) TLSFLAG="-starttls xmpp";; xmpp-server|5269) TLSFLAG="-starttls xmpp-server";; irc|194) TLSFLAG="-starttls irc";; postgres|5432) TLSFLAG="-starttls postgres";; mysql|3306) TLSFLAG="-starttls mysql";; lmtp|24) TLSFLAG="-starttls lmtp";; nntp|119) TLSFLAG="-starttls nntp";; sieve|4190) TLSFLAG="-starttls sieve";; ldap|389) TLSFLAG="-starttls ldap";; *) TLSFLAG="";; esac if [ "${TLSSERVERNAME}" = "FALSE" ]; then OPTIONS="-connect ${1}:${2} $TLSFLAG" else OPTIONS="-connect ${1}:${2} -servername ${1} $TLSFLAG" fi echo "" | "${OPENSSL}" s_client $OPTIONS 2> "${ERROR_TMP}" 1> "${CERT_TMP}" if "${GREP}" -i "Connection refused" "${ERROR_TMP}" > /dev/null; then prints "${1}" "${2}" "Connection refused" "Unknown" set_returncode 3 elif "${GREP}" -i "No route to host" "${ERROR_TMP}" > /dev/null; then prints "${1}" "${2}" "No route to host" "Unknown" set_returncode 3 elif "${GREP}" -i "gethostbyname failure" "${ERROR_TMP}" > /dev/null; then prints "${1}" "${2}" "Cannot resolve domain" "Unknown" set_returncode 3 elif "${GREP}" -i "Operation timed out" "${ERROR_TMP}" > /dev/null; then prints "${1}" "${2}" "Operation timed out" "Unknown" set_returncode 3 elif "${GREP}" -i "ssl handshake failure" "${ERROR_TMP}" > /dev/null; then prints "${1}" "${2}" "SSL handshake failed" "Unknown" set_returncode 3 elif "${GREP}" -i "connect: Connection timed out" "${ERROR_TMP}" > /dev/null; then prints "${1}" "${2}" "Connection timed out" "Unknown" set_returncode 3 elif "${GREP}" -i "Name or service not known" "${ERROR_TMP}" > /dev/null; then prints "${1}" "${2}" "Unable to resolve the DNS name ${1}" "Unknown" set_returncode 3 else check_file_status "${CERT_TMP}" "${1}" "${2}" fi } ##################################################### ### Check the expiration status of a certificate file ### Accepts three parameters: ### $1 -> certificate file to process ### $2 -> Server name ### $3 -> Port number of certificate ##################################################### check_file_status() { CERTFILE="${1}" HOST="${2}" PORT="${3}" ### Check to make sure the certificate file exists if [ ! -r "${CERTFILE}" ] || [ ! -s "${CERTFILE}" ]; then echo "ERROR: The file named ${CERTFILE} is unreadable or doesn't exist" echo "ERROR: Please check to make sure the certificate for ${HOST}:${PORT} is valid" set_returncode 3 return fi ### Grab the expiration date from the X.509 certificate if [ "${PKCSDBPASSWD}" != "" ]; then # Extract the certificate from the PKCS#12 database, and # send the informational message to /dev/null "${OPENSSL}" pkcs12 -nokeys -in "${CERTFILE}" \ -out "${CERT_TMP}" -clcerts -password pass:"${PKCSDBPASSWD}" 2> /dev/null # Extract the expiration date from the certificate CERTDATE=$("${OPENSSL}" x509 -in "${CERT_TMP}" -enddate -noout | \ "${SED}" 's/notAfter\=//') # Extract the issuer from the certificate CERTISSUER=$("${OPENSSL}" x509 -in "${CERT_TMP}" -issuer -noout | \ "${AWK}" 'BEGIN {RS=", " } $0 ~ /^O =/ { print substr($0,5,17)}') ### Grab the common name (CN) from the X.509 certificate COMMONNAME=$("${OPENSSL}" x509 -in "${CERT_TMP}" -subject -noout | \ "${SED}" -e 's/.*CN = //' | \ "${SED}" -e 's/, .*//') ### Grab the serial number from the X.509 certificate SERIAL=$("${OPENSSL}" x509 -in "${CERT_TMP}" -serial -noout | \ "${SED}" -e 's/serial=//') else # Extract the expiration date from the ceriticate CERTDATE=$("${OPENSSL}" x509 -in "${CERTFILE}" -enddate -noout -inform "${CERTTYPE}" | \ "${SED}" 's/notAfter\=//') # Extract the issuer from the certificate CERTISSUER=$("${OPENSSL}" x509 -in "${CERTFILE}" -issuer -noout -inform "${CERTTYPE}" | \ "${AWK}" 'BEGIN {RS=", " } $0 ~ /^O =/ { print substr($0,5,17)}') ### Grab the common name (CN) from the X.509 certificate COMMONNAME=$("${OPENSSL}" x509 -in "${CERTFILE}" -subject -noout -inform "${CERTTYPE}" | \ "${SED}" -e 's/.*CN = //' | \ "${SED}" -e 's/, .*//') ### Grab the serial number from the X.509 certificate SERIAL=$("${OPENSSL}" x509 -in "${CERTFILE}" -serial -noout -inform "${CERTTYPE}" | \ "${SED}" -e 's/serial=//') fi ### Split the result into parameters, and pass the relevant pieces to date2julian set -- ${CERTDATE} MONTH=$(getmonth "${1}") # Convert the date to seconds, and get the diff between NOW and the expiration date CERTJULIAN=$(date2julian "${MONTH#0}" "${2#0}" "${4}") CERTDIFF=$(date_diff "${NOWJULIAN}" "${CERTJULIAN}") if [ "${CERTDIFF}" -lt 0 ]; then if [ "${ALARM}" = "TRUE" ]; then send_mail "${SENDER}" "${ADMIN}" "Certificate for ${HOST} \"(CN: ${COMMONNAME})\" has expired!" \ "The SSL certificate for ${HOST} \"(CN: ${COMMONNAME})\" has expired!" fi prints "${HOST}" "${PORT}" "Expired" "${CERTDATE}" "${CERTDIFF}" "${CERTISSUER}" "${COMMONNAME}" "${SERIAL}" RETCODE_LOCAL=2 elif [ "${CERTDIFF}" -lt "${WARNDAYS}" ]; then if [ "${ALARM}" = "TRUE" ]; then send_mail "${SENDER}" "${ADMIN}" "Certificate for ${HOST} \"(CN: ${COMMONNAME})\" will expire in ${CERTDIFF}-days or less" \ "The SSL certificate for ${HOST} \"(CN: ${COMMONNAME})\" will expire on ${CERTDATE}" fi prints "${HOST}" "${PORT}" "Expiring" "${CERTDATE}" "${CERTDIFF}" "${CERTISSUER}" "${COMMONNAME}" "${SERIAL}" RETCODE_LOCAL=1 else prints "${HOST}" "${PORT}" "Valid" "${CERTDATE}" "${CERTDIFF}" "${CERTISSUER}" "${COMMONNAME}" "${SERIAL}" RETCODE_LOCAL=0 fi set_returncode "${RETCODE_LOCAL}" MIN_DATE=$(echo "${CERTDATE}" | "${AWK}" '{ print $1, $2, $4 }') set_summary "${RETCODE_LOCAL}" "${HOST}" "${PORT}" "${MIN_DATE}" "${CERTDIFF}" } ################################# ### Start of main program ################################# while getopts abc:d:e:E:f:hik:nNp:qs:St:Vx: option do case "${option}" in a) ALARM="TRUE";; b) NOHEADER="TRUE";; c) CERTFILE=${OPTARG};; d) CERTDIRECTORY=${OPTARG};; e) ADMIN=${OPTARG};; E) SENDER=${OPTARG};; f) SERVERFILE=$OPTARG;; h) usage exit 1;; i) ISSUER="TRUE";; k) PKCSDBPASSWD=${OPTARG};; n) NAGIOS="TRUE";; N) NAGIOS="TRUE" NAGIOSSUMMARY="TRUE";; p) PORT=$OPTARG;; q) QUIET="TRUE";; s) HOST=$OPTARG;; S) VALIDATION="TRUE";; t) CERTTYPE=$OPTARG;; V) echo "${PROGRAMVERSION}" exit 0 ;; x) WARNDAYS=$OPTARG;; \?) usage exit 1;; esac done ### Check to make sure a openssl utility is available if [ ! -f "${OPENSSL}" ]; then echo "ERROR: The openssl binary does not exist in ${OPENSSL}." echo "FIX: Please modify the \${OPENSSL} variable in the program header." exit 1 fi ### Check to make sure a date utility is available if [ ! -f "${DATE}" ]; then echo "ERROR: The date binary does not exist in ${DATE} ." echo "FIX: Please modify the \${DATE} variable in the program header." exit 1 fi ### Check to make sure a grep and find utility is available if [ ! -f "${GREP}" ] || [ ! -f "${FIND}" ]; then echo "ERROR: Unable to locate the grep and find binary." echo "FIX: Please modify the \${GREP} and \${FIND} variables in the program header." exit 1 fi ### Check to make sure the mktemp and printf utilities are available if [ ! -f "${MKTEMP}" ] || [ -z "${PRINTF}" ]; then echo "ERROR: Unable to locate the mktemp or printf binary." echo "FIX: Please modify the \${MKTEMP} and \${PRINTF} variables in the program header." exit 1 fi ### Check to make sure the sed and awk binaries are available if [ ! -f "${SED}" ] || [ ! -f "${AWK}" ]; then echo "ERROR: Unable to locate the sed or awk binary." echo "FIX: Please modify the \${SED} and \${AWK} variables in the program header." exit 1 fi ### Check to make sure a mail client is available it automated notifications are requested if [ "${ALARM}" = "TRUE" ] && [ ! -f "${MAIL}" ]; then echo "ERROR: You enabled automated alerts, but the mail binary could not be found." echo "FIX: Please modify the ${MAIL} variable in the program header." exit 1 fi # Send along the servername when TLS is used if ${OPENSSL} s_client -help 2>&1 | grep '-servername' > /dev/null; then TLSSERVERNAME="TRUE" else TLSSERVERNAME="FALSE" fi # Place to stash temporary files CERT_TMP=$($MKTEMP /var/tmp/cert.XXXXXX) ERROR_TMP=$($MKTEMP /var/tmp/error.XXXXXX) ### Baseline the dates so we have something to compare to MONTH=$(${DATE} "+%m") DAY=$(${DATE} "+%d") YEAR=$(${DATE} "+%Y") NOWJULIAN=$(date2julian "${MONTH#0}" "${DAY#0}" "${YEAR}") ### Touch the files prior to using them if [ -n "${CERT_TMP}" ] && [ -n "${ERROR_TMP}" ]; then touch "${CERT_TMP}" "${ERROR_TMP}" else echo "ERROR: Problem creating temporary files" echo "FIX: Check that mktemp works on your system" exit 1 fi ### If a HOST was passed on the cmdline, use that value if [ "${HOST}" != "" ]; then print_heading check_server_status "${HOST}" "${PORT:=443}" print_summary ### If a file is passed to the "-f" option on the command line, check ### each certificate or server / port combination in the file to see if ### they are about to expire elif [ -f "${SERVERFILE}" ]; then print_heading IFS=$'\n' for LINE in $(grep -E -v '(^#|^$)' "${SERVERFILE}") do HOST=${LINE%% *} PORT=${LINE##* } IFS=" " if [ "$PORT" = "FILE" ]; then check_file_status "${HOST}" "FILE" "${HOST}" else check_server_status "${HOST}" "${PORT}" fi done IFS="${OLDIFS}" print_summary ### Check to see if the certificate in CERTFILE is about to expire elif [ "${CERTFILE}" != "" ]; then print_heading check_file_status "${CERTFILE}" "FILE" "${CERTFILE}" print_summary ### Check to see if the certificates in CERTDIRECTORY are about to expire elif [ "${CERTDIRECTORY}" != "" ] && ("${FIND}" -L "${CERTDIRECTORY}" -type f > /dev/null 2>&1); then print_heading for FILE in $("${FIND}" -L "${CERTDIRECTORY}" -type f); do check_file_status "${FILE}" "FILE" "${FILE}" done print_summary ### There was an error, so print a detailed usage message and exit else usage exit 1 fi ### Exit with a success indicator if [ "${NAGIOS}" = "TRUE" ]; then exit "${RETCODE}" else exit 0 fi